From 6a0ddaef7c2f50f2d3ee8dfbf37f66dda11f061a Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 28 Aug 2011 00:32:23 +0200 Subject: [PATCH] ath9k: move the sequence number from ath_frame_info to ath_buf It is only necessary for BAW tracking and moving it to the ath_buf makes it easier to add further improvements, such as deferring seqno allocation in the aggregation path. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ath9k.h | 2 +- drivers/net/wireless/ath/ath9k/xmit.c | 55 +++++++++++--------------- 2 files changed, 24 insertions(+), 33 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index eb4cdefda629..5d9a9aabe476 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -211,12 +211,12 @@ struct ath_frame_info { enum ath9k_key_type keytype; u8 keyix; u8 retries; - u16 seqno; }; struct ath_buf_state { u8 bf_type; u8 bfs_paprd; + u16 seqno; unsigned long bfs_paprd_timestamp; }; diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 34005e11502c..e3eeca98fbba 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -168,7 +168,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) spin_unlock_bh(&txq->axq_lock); if (fi->retries) { - ath_tx_update_baw(sc, tid, fi->seqno); + ath_tx_update_baw(sc, tid, bf->bf_state.seqno); ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 1); } else { ath_tx_send_normal(sc, txq, NULL, &bf_head); @@ -237,7 +237,7 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq, list_add_tail(&bf->list, &bf_head); if (fi->retries) - ath_tx_update_baw(sc, tid, fi->seqno); + ath_tx_update_baw(sc, tid, bf->bf_state.seqno); spin_unlock(&txq->axq_lock); ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0); @@ -327,7 +327,7 @@ static void ath_tx_count_frames(struct ath_softc *sc, struct ath_buf *bf, while (bf) { fi = get_frame_info(bf->bf_mpdu); - ba_index = ATH_BA_INDEX(seq_st, fi->seqno); + ba_index = ATH_BA_INDEX(seq_st, bf->bf_state.seqno); (*nframes)++; if (!txok || (isaggr && !ATH_BA_ISSET(ba, ba_index))) @@ -428,6 +428,8 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, ath_tx_count_frames(sc, bf, ts, txok, &nframes, &nbad); while (bf) { + u16 seqno = bf->bf_state.seqno; + txfail = txpending = sendbar = 0; bf_next = bf->bf_next; @@ -435,7 +437,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, tx_info = IEEE80211_SKB_CB(skb); fi = get_frame_info(skb); - if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, fi->seqno))) { + if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, seqno))) { /* transmit completion, subframe is * acked by block ack */ acked_cnt++; @@ -479,7 +481,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, * block-ack window */ spin_lock_bh(&txq->axq_lock); - ath_tx_update_baw(sc, tid, fi->seqno); + ath_tx_update_baw(sc, tid, seqno); spin_unlock_bh(&txq->axq_lock); if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) { @@ -507,7 +509,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq, */ if (!tbf) { spin_lock_bh(&txq->axq_lock); - ath_tx_update_baw(sc, tid, fi->seqno); + ath_tx_update_baw(sc, tid, seqno); spin_unlock_bh(&txq->axq_lock); bf->bf_state.bf_type |= @@ -752,17 +754,19 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, struct ieee80211_tx_info *tx_info; struct ath_frame_info *fi; struct sk_buff *skb; + u16 seqno; do { skb = skb_peek(&tid->buf_q); fi = get_frame_info(skb); bf = fi->bf; + seqno = bf->bf_state.seqno; if (!bf_first) bf_first = bf; /* do not step over block-ack window */ - if (!BAW_WITHIN(tid->seq_start, tid->baw_size, fi->seqno)) { + if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) { status = ATH_AGGR_BAW_CLOSED; break; } @@ -810,7 +814,7 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc, /* link buffers of this frame to the aggregate */ if (!fi->retries) - ath_tx_addto_baw(sc, tid, fi->seqno); + ath_tx_addto_baw(sc, tid, seqno); ath9k_hw_set11n_aggr_middle(sc->sc_ah, bf->bf_desc, ndelim); __skb_unlink(skb, &tid->buf_q); @@ -1434,6 +1438,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, { struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu); struct list_head bf_head; + u16 seqno = bf->bf_state.seqno; bf->bf_state.bf_type |= BUF_AMPDU; @@ -1445,7 +1450,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, * - h/w queue depth exceeds low water mark */ if (!skb_queue_empty(&tid->buf_q) || tid->paused || - !BAW_WITHIN(tid->seq_start, tid->baw_size, fi->seqno) || + !BAW_WITHIN(tid->seq_start, tid->baw_size, seqno) || txctl->txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) { /* * Add this frame to software queue for scheduling later @@ -1463,7 +1468,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid, /* Add sub-frame to BAW */ if (!fi->retries) - ath_tx_addto_baw(sc, tid, fi->seqno); + ath_tx_addto_baw(sc, tid, seqno); /* Queue to h/w without aggregation */ TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw); @@ -1519,39 +1524,19 @@ static enum ath9k_pkt_type get_hw_packet_type(struct sk_buff *skb) static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb, int framelen) { - struct ath_softc *sc = hw->priv; struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); struct ieee80211_sta *sta = tx_info->control.sta; struct ieee80211_key_conf *hw_key = tx_info->control.hw_key; - struct ieee80211_hdr *hdr; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ath_frame_info *fi = get_frame_info(skb); struct ath_node *an = NULL; - struct ath_atx_tid *tid; enum ath9k_key_type keytype; - u16 seqno = 0; - u8 tidno; keytype = ath9k_cmn_get_hw_crypto_keytype(skb); if (sta) an = (struct ath_node *) sta->drv_priv; - hdr = (struct ieee80211_hdr *)skb->data; - if (an && ieee80211_is_data_qos(hdr->frame_control) && - conf_is_ht(&hw->conf) && (sc->sc_flags & SC_OP_TXAGGR)) { - - tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK; - - /* - * Override seqno set by upper layer with the one - * in tx aggregation state. - */ - tid = ATH_AN_2_TID(an, tidno); - seqno = tid->seq_next; - hdr->seq_ctrl = cpu_to_le16(seqno << IEEE80211_SEQ_SEQ_SHIFT); - INCR(tid->seq_next, IEEE80211_SEQ_MAX); - } - memset(fi, 0, sizeof(*fi)); if (hw_key) fi->keyix = hw_key->hw_key_idx; @@ -1561,7 +1546,6 @@ static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb, fi->keyix = ATH9K_TXKEYIX_INVALID; fi->keytype = keytype; fi->framelen = framelen; - fi->seqno = seqno; } static int setup_tx_flags(struct sk_buff *skb) @@ -1797,6 +1781,7 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf, struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct list_head bf_head; struct ath_atx_tid *tid = NULL; + u16 seqno; u8 tidno; spin_lock_bh(&txctl->txq->axq_lock); @@ -1806,6 +1791,12 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf, IEEE80211_QOS_CTL_TID_MASK; tid = ATH_AN_2_TID(txctl->an, tidno); + seqno = tid->seq_next; + hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT); + INCR(tid->seq_next, IEEE80211_SEQ_MAX); + + bf->bf_state.seqno = seqno; + WARN_ON(tid->ac->txq != txctl->txq); } -- 2.20.1